Handheld portable cutting apparatus having a cutter unit

ABSTRACT

A handheld portable cutting apparatus has a cutter unit with a cutter unit longitudinal axis. In a central housing section of the cutting apparatus, a drive connection is arranged between an electric drive motor and the cutter unit, wherein a motor housing having a motor housing longitudinal axis extends from the central housing section. A handle extends from the central housing section in a handle longitudinal axis. The cutter unit includes a guide bar with a saw chain circulating thereon, wherein, in a side view onto the cutting apparatus, the point of intersection between the handle longitudinal axis and the motor housing longitudinal axis and also the point of intersection between the handle longitudinal axis and the cutter unit longitudinal axis lie in the central housing section.

CROSS REFERENCE TO RELATED APPLICATIONS

This application claims priority of U.S. patent application Ser. No.15/812,419, filed Nov. 14, 2017 (now US 2018/0133818-A1), which, inturn, claims priority of German patent application no. 10 2016 013910.2, filed Nov. 14, 2016, the entire content of both applications isincorporated herein by reference.

TECHNICAL FIELD

The disclosure relates to a handheld portable cutting apparatus having acutter unit, which adjoins a central housing section of the cuttingapparatus. In the central housing section of the cutting apparatus, adrive connection is arranged between an electric drive motor and thecutter unit. The drive motor is accommodated in a motor housing, whichextends from the central housing section and has a motor housinglongitudinal axis. To hold and guide the cutting apparatus, provision ismade of a handle, which extends from the central housing section and hasa handle longitudinal axis. In the handle longitudinal direction, thehandle has a front end, adjoining the central housing section, and afree rear end.

BACKGROUND

In the case of such a cutting apparatus having a cutter unit, anergonomically adapted configuration is necessary for long-term use.

SUMMARY

It is an object of the disclosure to provide a cutting apparatusconfigured such that fatigue-proof, ergonomic guidance of the cuttingapparatus by the user is ensured.

The object can, for example, be achieved via a handheld, portablecutting apparatus including: a cutter unit; a central housing section;the cutter unit adjoining the central housing section; a motor housing;an electric drive motor disposed in the motor housing; a driveconnection arranged in the central housing section between the electricdrive motor and the cutter unit; the drive connection having a drivingwheel configured to rotate about a rotational axis; the motor housingextending from the central housing section and defining a longitudinalmotor housing axis; a handle extending from the central housing section;an actuating element configured to control the electric drive motor,wherein the actuating element is configured to be actuated by a hand ofan operator gripping the handle; the handle having a front end adjoiningthe central housing section and a rear end; wherein the rear end of thehandle housing is configured such that a battery pack can be arrangedtherein; the handle defining a longitudinal handle axis extending fromthe front end to the rear end; the longitudinal handle axis defining alongitudinal handle direction; the cutter unit extending along alongitudinal cutter unit axis extending clear of the battery pack whenviewed in a side elevation view onto the cutting apparatus; the cutterunit including a guide bar and a saw chain configured to circulate onthe guide bar; the drive motor being configured to drive the saw chainvia the drive connection; the guide bar defining a longitudinal centeraxis; wherein the longitudinal cutter unit axis runs coaxially to thelongitudinal center axis; the longitudinal handle axis and thelongitudinal motor housing axis defining, at least in a two-dimensionalrendering of the side elevation view directed towards the rotationalaxis, a first point of intersection P1; the longitudinal handle axis andthe longitudinal cutter unit axis defining, at least in thetwo-dimensional rendering of the side elevation view, a second point ofintersection P2; wherein the longitudinal handle axis, the longitudinalmotor housing axis, and the longitudinal cutter unit axis run parallelto an imaginary plane which is perpendicular to the rotational axis; andthe first point of intersection P1 and the second point of intersectionP2 both lying in the central housing section in the two-dimensionalrendering of the side elevation view.

As a powerful cutter unit, provision is a made of a saw chaincirculating on a guide bar, wherein the electric drive motor drives thesaw chain via the drive connection. The cutting apparatus is configuredhere in such a way that, in a side view onto the cutting apparatus, thepoint of intersection between the handle longitudinal axis and the motorhousing longitudinal axis and also the point of intersection between thehandle longitudinal axis and a cutter unit longitudinal axis lie in theregion of the central housing section.

This configuration and arrangement of the various elements of a cuttingapparatus around a central housing section results in an ergonomicallyadvantageous housing configuration, which makes fatigue-proof workingwith the cutting apparatus possible.

In an embodiment, the cutter unit, the motor housing and the handleextend in radial directions away from the central housing section. Inthis case, the cutter unit, the motor housing and the handle are locatedspaced apart in the circumferential direction about the central housingsection.

The arrangement is advantageously made in such a way that, in an endview onto the rotational axis of a rotating driving wheel of the driveconnection, the points of intersection between the handle longitudinalaxis and the motor housing longitudinal axis, between the cutter unitlongitudinal axis and the handle longitudinal axis, and between thecutter unit longitudinal axis and the motor housing longitudinal axislie within the contour of the driving wheel. The arrangement isadvantageously made here in such a way that, in a side view onto thecutting apparatus, the cutter unit, the motor housing and the handleextend radially to the rotational axis of the driving wheel.

A sprocket wheel driving the saw chain of the cutter unit advantageouslylies within the contour of the driving wheel and is covered by asprocket wheel cover. The sprocket wheel cover is expediently part ofthe central housing section.

The handle longitudinal axis and the motor housing longitudinal axisinclude a directional angle which opens to the rear end of the handle.This directional angle has a magnitude in the range of from 40° to 80°,in particular a magnitude of 60°. Through the configuration of thedirectional angle, a protected receptacle for a user's hand grippingaround the handle is formed between the motor housing and the handle.

The configuration of a directional angle, with the formation of areceptacle, furthermore has the advantage that the user can apply, forexample, via the back of the user's hand, an advancing force to thecutter unit, in the embodiment to the saw chain of the cutter unit.

In the circumferential direction, on the opposing side of the handle, ahandle angle measuring in particular greater than 90° is formed betweenthe handle longitudinal axis of the handle and the cutter unitlongitudinal axis. The handle angle is preferably 150°.

In an embodiment, the handle angle is divided by a finger guard. In thiscase, the finger guard, together with the handle longitudinal axis, candelimit a finger angle of 80° to 110° which opens to the rear end of thehandle. The finger angle is advantageously 90°.

An apparatus angle lying between the motor housing longitudinal axis andthe cutter unit longitudinal axis is such that it is greater than 90°.The apparatus angle can, in particular, be 150°.

In an embodiment, it is provided that the sum total of directional angleand apparatus angle is regularly greater than 180°.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will now be described with reference to the drawingswherein:

FIG. 1 shows, in a first side view, a handheld portable cuttingapparatus;

FIG. 2 shows, in a second side view, the handheld portable cuttingapparatus shown in FIG. 1;

FIG. 3 shows a plan view onto the cutting apparatus shown in FIG. 2;

FIG. 4 shows a schematic section through the cutting apparatus along theline IV-IV shown in FIG. 2;

FIG. 5 shows a schematic section through the cutting apparatus along theline V-V shown in FIG. 2; and,

FIG. 6 shows a schematic section through the cutting apparatus along theline VI-VI shown in FIG. 2.

DESCRIPTION OF THE PREFERRED EMBODIMENTS OF THE INVENTION

The handheld cutting apparatus 1 shown in a side view in FIG. 1 isexpediently formed as what is termed a wood cutter. The cuttingapparatus 1 includes a central housing section 2, on which a cutter unit3, a motor housing 4 with an electric drive motor 5, and also a handle 6are arranged.

The handle 6 is formed by a rod-shaped handle housing 7, which isconnected by way of a front end 8 to the central housing section 2. Therear end 9 of the handle housing 7 has an open form. A battery pack 10is pushed into the open rear end 9 and protrudes out of the handlehousing 7 by way of an end section 11. The end section 11 is configuredas an elongated end of the handle housing 7. The rod-shaped handle 6 hasa handle length G, measured from the front end 8 of the handle housing 7as far as the rear end of the end section 11 of the battery pack 10. Therear handle 6 extends radially from the central housing section 2 in afirst radial direction R1.

The motor housing 4 with the electric drive motor 5 extends radiallyfrom the central housing section 2 in a second radial direction R2.Measured from the central housing section 2 as far as the free end 12 ofthe motor housing 4, the motor housing 4 has a length M.

The cutter unit 3 extends over a length S radially from the centralhousing section 2 in a third radial direction R3; the length S of thecutter unit 3 is greater than the length M of the motor housing 4 andsmaller than the handle length G.

In the normal position of the cutter unit 3, as shown in FIG. 1, acutter unit longitudinal axis 13 lies approximately horizontally. Theradial direction R3 thus lies horizontally.

In a clockwise direction, the radial direction R2 of the motor housing 4lies rotated by a peripheral angle 14. Furthermore, in a clockwisedirection, a peripheral angle 24 of 65° lies between the radialdirection R2 and the radial direction R1 of the handle 6.

The radial direction R3 of the cutter unit longitudinal axis 13 isrotated by a peripheral angle 34 of 155° in a clockwise direction withrespect to the radial direction R1 of the handle longitudinal axis 33.

A drive connection 15 is accommodated in the central housing section 2and is arranged between the electric drive motor 5 and the cutter unit3. The drive connection 15 has a driving wheel 17 rotating about arotational axis 16.

As FIGS. 4 and 5 show, in the embodiment shown, the driving wheel 17 isheld fixedly in terms of rotation on a drive shaft 29, at one end ofwhich there is arranged a sprocket wheel 18. As FIGS. 4 to 6 inparticular show, the cutter unit 3 includes a guide bar 19 (FIG. 4) anda saw chain 20 circulating thereon. In a side view onto the cuttingapparatus 1, for example, in the side view as shown in FIG. 2, a handlelongitudinal axis 33 and the motor housing longitudinal axis 23 have apoint of intersection P1, which in side view—cf. FIGS. 1 and 2—lies inthe central housing section 2. The point of intersection P2 between thehandle longitudinal axis 33 and the cutter unit longitudinal axis 13likewise lies in the central housing section 2, in a side view onto thecutting apparatus 1.

As FIG. 2 furthermore shows, a point of intersection P3 between thecutter unit longitudinal axis 13 and the motor housing longitudinal axis23 lies in the central housing section 2, in particular on therotational axis 16 of the driving wheel 17.

In an embodiment, the points of intersection P1, P2 and P3 of the cutterunit longitudinal axis 13, the motor housing longitudinal axis 23 andthe handle longitudinal axis 33 lie in a region B of the central housingsection 2 which—as FIG. 2 shows—extends between the rotational axis 16and the front end 8 of the handle 6.

In an embodiment, the points of intersection P1, P2 and P3 of the cutterunit longitudinal axis 13, the motor housing longitudinal axis 23 andthe handle longitudinal axis 33 lie, in a side view, within the contourof the driving wheel 16, as FIG. 2 shows. The cutter unit 3, the motorhousing 4 and the handle 6 preferably extend radially to the rotationalaxis 16 of the driving wheel (FIG. 1).

As shown in FIG. 1, it may be advantageous if the points of intersectionbetween the cutter unit longitudinal axis 13, the motor housinglongitudinal axis 23 and the handle longitudinal axis 33 form a commonpoint of intersection P. In particular, the common point of intersectionP can lie on the rotational axis 16 of the driving wheel 17.

The sprocket wheel 18 has a diameter D2 which is smaller than thediameter D1 of the driving wheel 17 meshing with the drive pinion 31 ofthe drive motor 5. In a side view according to FIGS. 1 and 2, thesprocket wheel 18 lies within the contour of the driving wheel 17. AsFIG. 1 shows, it is advantageous if the points of intersection betweenthe cutter unit longitudinal axis 13, the motor housing longitudinalaxis 23 and the handle longitudinal axis 33 lie within the contour ofthe sprocket wheel 18. In FIG. 1, the common point of intersection Plies within the contour of the driving wheel 17 and also within thecontour of the sprocket wheel 18. In this case, individual points ofintersection P1 and P3 can lie within the contour of the sprocket wheel18 (FIG. 2) or else in the marginal region of the contour of thesprocket wheel 18, as FIG. 2 shows.

The sprocket wheel 18 is covered by a sprocket wheel cover 21, which isfastened to the central housing section 2 by means of a stud bolt 22.The guide bar 19 of the cutter unit 3 is held clamped between thesprocket wheel cover 21 and a counter bearing 25 of the central housingsection 2. The sprocket wheel cover 21 forms part of the central housingsection 2.

As FIG. 2 shows, the handle longitudinal axis 33 and the motor housinglongitudinal axis 23 include a directional angle 26 open to the rear end9. The directional angle 26 advantageously lies in a range of from 40°to 80°. The directional angle 26 present between the handle longitudinalaxis 33 of the handle 6 and the motor housing longitudinal axis 23expediently has a magnitude of 60°.

Through the directional angle 26, a protected receptacle 30 for a user'shand surrounding the handle 6 is formed between the motor housing 4 andthe handle 6. The directional angle 26 is advantageously such that auser's hand gripping around the handle 6 can be brought to bear againsta bearing surface 28 of the motor housing 4, in order to introduce anadvancing force into the cutting apparatus 1.

With respect to the rotational axis 16 of the driving wheel 17, or ofthe sprocket wheel 18, in the circumferential direction, on the opposingside of the handle 6, a handle angle 36 advantageously greater than 90°lies between the handle longitudinal axis 33 and the cutter unitlongitudinal axis 13. The handle angle 36 is in particular 150°.

As shown in FIGS. 1 and 2, the handle angle 36 is divided by a fingerguard 40. The finger guard 40 is formed by a type of disk-shapedpartition wall 41, as FIGS. 3 to 6 show. The partition wall plane 42 ispreferably located in such a manner that the handle longitudinal axis 33stands perpendicular on the partition wall plane 42. The partition wall41 protrudes by a protrusion z with respect to the longitudinal sides 38and 39 of the cutting apparatus 1. The partition wall 41 protects theuser's hand gripping around the handle 6 with respect to the cutter unit3.

The partition wall 41 of the finger guard 40, together with the handlelongitudinal axis 33, delimits a finger angle 44 of approximately 80° to110°, which opens to the rear end 9 of the handle 6. In the embodimentshown, the finger angle is 90°.

An apparatus angle 46 lying between the motor housing longitudinal axis23 and the cutter unit longitudinal axis 13 is greater than 90°. Inparticular, the angle is 150°.

The arrangement of the handle 6, motor housing 4 and cutter unit 3around the central housing section 2 is provided in particular in such amanner that the sum total of directional angle 26 and apparatus angle 46is greater than 180°, in particular has a magnitude of 205°.

As can be seen from the plan view according to FIG. 3, the handlelongitudinal axis 33 and the motor housing longitudinal axis 23 lie in acommon plane 27. In the plan view according to

FIG. 3, the cutter unit longitudinal axis 13 lies with a lateral offsetv to the plane 27. The cutter unit longitudinal axis 13 preferably runsparallel to the plane 27.

The cutter unit 3 is covered by a protection cover 50, which—cf. FIG.3—can be pivoted about a cap pivot axis 51. To this end, the protectioncover 50 is mounted pivotably on the central housing section 2. Thepivot bearing is provided on the central housing section 2 between thecutter unit 3 and the motor housing 4.

If the cutter unit 3 is lowered in the movement arrow direction 48 ontoa workpiece 49 to be cut, the protection cover 50 pivots upward in thedirection of arrow 52 about the cap pivot axis 51, such that the sawchain 20 circulating on the guide bar 19 comes into cutting engagementwith the workpiece 49.

If the cutting apparatus 3 is raised counter to the movement arrowdirection 48, the protection cover pivots back counter to the directionof arrow 52 under the action of a return spring 53, such that the guidebar 19, together with the saw chain 20, is covered by the protectioncover 50 again.

FIGS. 4 and 5 show in particular the drive connection 15. The electricmotor 5 drives the drive pinion 31, which meshes with the driving wheel17. The driving wheel 17 is held fixedly in terms of rotation on thedrive shaft 29. The drive shaft 29 is held rotatably in the centralhousing section 2 with two bearings 32. The sprocket wheel 18 is mountedon a free end 35 of the drive shaft 29 and drives the saw chain 20circulating on the guide bar 19.

It is clear from the sectional illustration according to FIG. 6 that thebattery pack 10 is pushed at least with one end 61 into the handlehousing 7 of the handle 6. Within the handle housing 7, the battery pack10 is connected to the drive electronics of the electric drive motor 5and to an actuating element, in the form of a throttle lever 62, forcontrolling the electric drive motor 5.

It is understood that the foregoing description is that of the preferredembodiments of the invention and that various changes and modificationsmay be made thereto without departing from the spirit and scope of theinvention as defined in the appended claims.

What is claimed is:
 1. A handheld, portable cutting apparatuscomprising: a cutter unit; a central housing section; said cutter unitadjoining said central housing section; a motor housing; an electricdrive motor disposed in said motor housing; a drive connection arrangedin said central housing section between said electric drive motor andsaid cutter unit; said drive connection having a driving wheelconfigured to rotate about a rotational axis; said motor housingextending from said central housing section and defining a longitudinalmotor housing axis; a handle extending from said central housingsection; an actuating element configured to control said electric drivemotor, wherein said actuating element is configured to be actuated by ahand of an operator gripping said handle; said handle having a front endadjoining said central housing section and a rear end; wherein said rearend of said handle housing is configured such that a battery pack can bearranged therein; said handle defining a longitudinal handle axisextending from said front end to said rear end; said longitudinal handleaxis defining a longitudinal handle direction; said cutter unitextending along a longitudinal cutter unit axis extending clear of thebattery pack when viewed in a side elevation view onto the cuttingapparatus; said cutter unit including a guide bar and a saw chainconfigured to circulate on said guide bar; said drive motor beingconfigured to drive said saw chain via said drive connection; said guidebar defining a longitudinal center axis; wherein said longitudinalcutter unit axis runs coaxially to said longitudinal center axis; saidlongitudinal handle axis and said longitudinal motor housing axisdefining, at least in a two-dimensional rendering of the side elevationview directed towards said rotational axis, a first point ofintersection P1; said longitudinal handle axis and said longitudinalcutter unit axis defining, at least in said two-dimensional rendering ofsaid side elevation view, a second point of intersection P2; whereinsaid longitudinal handle axis, said longitudinal motor housing axis, andsaid longitudinal cutter unit axis run parallel to an imaginary planewhich is perpendicular to said rotational axis; and said first point ofintersection P1 and said second point of intersection P2 both lying insaid central housing section in said two-dimensional rendering of saidside elevation view.
 2. The handheld, portable cutting apparatus ofclaim 1, wherein said longitudinal cutter unit axis extends clear ofsaid motor housing when viewed in said side elevation view onto thecutting apparatus.
 3. The handheld, portable cutting apparatus of claim1, wherein: said cutter unit extends in a radial direction R1 from saidcentral housing section; said motor housing extends in a radialdirection R2 from said central housing section; and said handle extendsin a radial direction R3 from said central housing section.
 4. Thehandheld, portable cutting apparatus of claim 1, wherein said cutterunit, said motor housing and said handle extend radially with respect tosaid rotational axis when viewed in side elevation view onto the cuttingapparatus.
 5. The handheld, portable cutting apparatus of claim 1,wherein said driving wheel, in a two-dimensional rendering of a sideelevation view directed toward said rotational axis, defines a contour;and the handheld, portable cutting apparatus further comprises: asprocket wheel arranged such that the sprocket wheel, in saidtwo-dimensional rendering, lies within said contour of said drivingwheel; and a sprocket wheel cover configured to cover said sprocketwheel.
 6. The handheld, portable cutting apparatus of claim 5, whereinsaid sprocket wheel cover is part of said central housing section. 7.The handheld, portable cutting apparatus of claim 1, wherein said handleis defined by a handle housing having said front end and said rear end;and, all of said handle housing is configured to have a form of a singlerod from said front end to said rear end.
 8. The handheld, portablecutting apparatus of claim 1, wherein said handle is defined by a handlehousing and, in a peripheral direction about said rotational axis, saidmotor housing is arranged between said cutter unit and said handlehousing and capable of being directed upwardly during operational use ofsaid handheld, portable cutting apparatus.
 9. The handheld, portablecutting apparatus of claim 1, wherein said handle is defined by a handlehousing and said handle housing defines a point at a maximum handledistance to said rotational axis; said motor housing defines a point ata maximum motor distance to said rotational axis; said drive motordefines a motor longitudinal axis and said maximum motor distance ismeasured in the direction of said motor longitudinal axis; said motorlongitudinal axis runs parallel to said imaginary plane which isperpendicular to said rotational axis; and said maximum handle distanceis greater than said maximum motor distance.
 10. The handheld, portablecutting apparatus of claim 1, wherein said handheld, portable cuttingapparatus is clear of a handle movable relative to said central housingsection.
 11. The handheld, portable cutting apparatus of claim 1,wherein said longitudinal cutter unit axis extends clear of saidactuating element when viewed in said side elevation view onto thecutting apparatus.
 12. A handheld, portable cutting apparatuscomprising: a cutter unit; a central housing section; said cutter unitadjoining said central housing section; a motor housing; an electricdrive motor disposed in said motor housing; a drive connection arrangedin said central housing section between said electric drive motor andsaid cutter unit; said drive connection having a driving wheelconfigured to rotate about a rotational axis; said motor housingextending from said central housing section and defining a longitudinalmotor housing axis; a handle extending from said central housingsection; an actuating element configured to control said electric drivemotor, wherein said actuating element is configured to be actuated by ahand of an operator gripping said handle; said handle having a front endadjoining said central housing section and a rear end; wherein said rearend of said handle housing is configured such that a battery pack can bearranged therein; said handle defining a longitudinal handle axisextending from said front end to said rear end; said longitudinal handleaxis defining a longitudinal handle direction; said cutter unitextending along a longitudinal cutter unit axis extending clear of thebattery pack when viewed in a side elevation view onto the cuttingapparatus; said cutter unit including a guide bar and a saw chainconfigured to circulate on said guide bar; said drive motor beingconfigured to drive said saw chain via said drive connection; said guidebar defining a longitudinal center axis; wherein said longitudinalcutter unit axis runs coaxially to said longitudinal center axis; saidlongitudinal handle axis and said longitudinal cutter unit axisdefining, at least in said two-dimensional rendering of said sideelevation view, a second point of intersection P2; wherein saidlongitudinal handle axis and said longitudinal cutter unit axis runparallel to an imaginary plane which is perpendicular to said rotationalaxis; and said second point of intersection P2 lying in said centralhousing section in said two-dimensional rendering of said side elevationview, wherein said longitudinal cutter unit axis extends clear of saidmotor housing when viewed in said side elevation view onto the cuttingapparatus.
 13. The handheld, portable cutting apparatus of claim 12,wherein said longitudinal cutter unit axis extends clear of saidactuating element when viewed in said side elevation view onto thecutting apparatus.
 14. The handheld, portable cutting apparatus of claim12, wherein during normal operational use of the handheld, portablecutting apparatus said motor housing is arranged above said handlehousing.
 15. The handheld, portable cutting apparatus of claim 14,wherein, when viewed in said side elevation view onto the cuttingapparatus, said longitudinal cutter unit axis completely separates saidmotor housing from said handle housing.
 16. A handheld, portable cuttingapparatus comprising: a cutter unit; a central housing section; saidcutter unit adjoining said central housing section; a motor housing; anelectric drive motor disposed in said motor housing; a drive connectionarranged in said central housing section between said electric drivemotor and said cutter unit; said drive connection having a driving wheelconfigured to rotate about a rotational axis; said motor housingextending from said central housing section and defining a longitudinalmotor housing axis; a handle extending from said central housingsection; an actuating element configured to control said electric drivemotor, wherein said actuating element is configured to be actuated by ahand of an operator gripping said handle; said handle having a front endadjoining said central housing section and a rear end; wherein said rearend of said handle housing is configured such that a battery pack can bearranged therein; said handle defining a longitudinal handle axisextending from said front end to said rear end; said longitudinal handleaxis defining a longitudinal handle direction; said cutter unitextending along a longitudinal cutter unit axis extending clear of thebattery pack when viewed in said side elevation view onto the cuttingapparatus; said cutter unit including a guide bar and a saw chainconfigured to circulate on said guide bar; said drive motor beingconfigured to drive said saw chain via said drive connection; said guidebar defining a longitudinal center axis; wherein said longitudinalcutter unit axis runs coaxially to said longitudinal center axis; saidlongitudinal handle axis and said longitudinal cutter unit axisdefining, at least in said two-dimensional rendering of said sideelevation view, a second point of intersection P2; wherein saidlongitudinal handle axis and said longitudinal cutter unit axis runparallel to an imaginary plane which is perpendicular to said rotationalaxis; said second point of intersection P2 lying in said central housingsection in said two-dimensional rendering of said side elevation view,wherein said longitudinal cutter unit axis divides said two-dimensionalrendering of said side elevation view into a first half and a secondhalf; and said first half being configured to have the battery packarranged therein.
 17. The handheld, portable cutting apparatus of claim16, wherein said motor housing is arranged in said second half.